摘要：#include#include#include#include#include#includeusing namespace std;struct node{char value;node *lchild;node *rchild;node *add;};int main(){int n;while(cin>>n){getchar();string str;for(int c=0;c>str;stack s;node *p=(node*)malloc(sizeof(node));p->add=p;p->lchild=NULL;p->rchild=NULL; 阅读全文